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CVE-2021-3612

Date: July 9, 2021

An out-of-bounds memory write flaw was found in the Linux kernel's joystick devices subsystem in versions before 5.9-rc1, in the way the user calls ioctl JSIOCSBTNMAP. This flaw allows a local user to crash the system or possibly escalate their privileges on the system. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.

Severity Score

Related Resources (14)

https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html
https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YKGI562LFV5MESTMVTCG5RORSBT6NGBN/
https://access.redhat.com/security/cve/CVE-2021-3612
https://lore.kernel.org/linux-input/20210620120030.1513655-1-avlarkin82@gmail.com/
https://bugzilla.redhat.com/show_bug.cgi?id=1974079
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YKGI562LFV5MESTMVTCG5RORSBT6NGBN/
https://security-tracker.debian.org/tracker/CVE-2021-3612
https://people.canonical.com/~ubuntu-security/cve/CVE-2021-3612
https://security.netapp.com/advisory/ntap-20210805-0005/
https://lore.kernel.org/linux-input/20210620120030.1513655-1-avlarkin82%40gmail.com/
https://www.oracle.com/security-alerts/cpujul2022.html
https://nvd.nist.gov/vuln/detail/CVE-2021-3612
https://www.mend.io/vulnerability-database/CVE-2021-3612

Severity Score

Weakness Type (CWE)

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-119

Improper Input Validation

CWE-20

Out-of-bounds Write

CWE-787

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): COMPLETE
Integrity (I): COMPLETE
Availability (A): COMPLETE
Additional information:

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